单项选择题

From the passage we know the buyer pays more attention to______.

A．the size of a container
B．a container with attractive picture
C．a well-designed container
D．a plain container with low cost
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单项选择题
By Dr. Clark lived for 112 days ,the author most probably means that______.
A．the replacement of Dr. Clark' s heart was a failure
B．there was still a long way to go in applied bionics
C．applied bionics was promising
D．the first artificial heart was most effective
单项选择题
According to the passage, it was Dr. W. Lillehei that______.
A．first developed applied bionics
B．was the first to operate on the heart of a patient
C．developed the artificial heart
D．used more sophisticated methods to do "open heart" surgery
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